A345236 - OEIS

A345236

Triangle read by rows: The rightmost column contains the terms of A002262 starting at A002262(1). Each time a column's value is zero (except for a(0)), the column to its left starts at the next term in A002262, or if that column does not yet exist, it starts at A002262(2).

0, 1, 1, 0, 1, 1, 1, 2, 1, 0, 0, 1, 0, 1, 1, 0, 2, 1, 0, 3, 1, 1, 0, 1, 1, 1, 1, 1, 2, 1, 1, 3, 1, 1, 4, 1, 2, 0, 1, 2, 1, 1, 2, 2, 1, 2, 3, 1, 2, 4, 1, 2, 5, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 2, 1, 0, 0, 3, 1, 0, 0, 4, 1, 0, 0, 5, 1, 0, 0, 6, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 2, 1, 0, 1, 3

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OFFSET

0,8

COMMENTS

The first row with k columns is the A006893(k)-th. The last row with k columns comprises the first k terms of A006893.

LINKS

Table of n, a(n) for n=0..96.

John-Vincent Saddic, Java code to print the n-th row of the triangle

FORMULA

To calculate the values of the n-th row:

c(m) = floor((sqrt(9 + 8*m) - 3)/2) = A052146(m+1).

r(m) = m - (c(m)^2)/2 - 3*c(m)/2 = A002262(m+1).