A034004 - OEIS

A034004

Successive decimal digits of triangular numbers.

0, 1, 3, 6, 1, 0, 1, 5, 2, 1, 2, 8, 3, 6, 4, 5, 5, 5, 6, 6, 7, 8, 9, 1, 1, 0, 5, 1, 2, 0, 1, 3, 6, 1, 5, 3, 1, 7, 1, 1, 9, 0, 2, 1, 0, 2, 3, 1, 2, 5, 3, 2, 7, 6, 3, 0, 0, 3, 2, 5, 3, 5, 1, 3, 7, 8, 4, 0, 6, 4, 3, 5, 4, 6, 5, 4, 9, 6, 5, 2, 8, 5, 6, 1, 5, 9, 5, 6, 3, 0, 6, 6, 6, 7, 0, 3, 7, 4, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

REFERENCES

Jason Rogers and Jason Earls, 0.1361015212836455566789110512013615..., A Split Novel, Lulu Press, NY, 2006, p. 84.

LINKS

Michel Marcus, Table of n, a(n) for n = 1..5355

MATHEMATICA

Flatten[ IntegerDigits /@ Accumulate@ Range[0, 38]] (* Robert G. Wilson v, Mar 15 2012 *)

PROG

(PARI) print1(0, ", "); for(n=1, 9, d=digits(n*(n+1)/2); for(i=1, #d, print1(d[i]", "))) \\ Charles R Greathouse IV, Feb 07 2013

CROSSREFS