A248213 - OEIS

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A248213

Values of y in A033210 (primes of the form x^2+13*y^2).

3

1, 1, 1, 2, 2, 2, 1, 1, 2, 3, 4, 4, 1, 2, 3, 1, 3, 5, 4, 5, 4, 3, 7, 7, 7, 2, 7, 6, 1, 5, 6, 8, 8, 4, 8, 6, 2, 4, 9, 6, 5, 9, 9, 8, 7, 9, 2, 4, 10, 8, 10, 6, 4, 9, 5, 11, 1, 5, 11, 6, 2, 10, 1, 12, 4, 2, 7, 1, 11, 12, 10, 3, 7, 5, 1, 10, 12, 13, 7, 13, 13, 11, 10, 13, 4, 5, 11, 13, 14, 14, 4, 3, 6, 12, 11, 7, 12, 14, 8, 2

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..100.

Zak Seidov, Table of n, A033210(n), A248212(n) and A248213(n) for n =1,10000.

FORMULA

a(n) = sqrt(A033210(n)-A248212(n)^2)/13).

CROSSREFS

Cf. A033210, A248212 (values of x).

Sequence in context: A334486 A356997 A171412 * A376633 A317682 A216651

Adjacent sequences: A248210 A248211 A248212 * A248214 A248215 A248216

KEYWORD

nonn

AUTHOR

Zak Seidov, Oct 04 2014

STATUS

approved