A365288 a(n) is the least positive integer that can be expressed as the sum of a prime number and a square of a nonnegative integer in exactly n ways.

1, 2, 3, 11, 38, 107, 83, 167, 293, 227, 398, 677, 668, 902, 908, 1238, 1487, 1448, 1748, 1592, 2273, 2672, 3167, 3947, 4457, 3632, 3713, 6047, 5843, 7052, 8123, 5792, 5297, 9602, 9092, 6368, 9908, 13268, 8153, 9833, 8777, 16112, 15923, 14528, 14852, 18233

Offset

0,2

Links

Table of n, a(n) for n=0..45.

Example

For n = 3: 11 = 2 + 3^2 = 7 + 2^2 = 11 + 0^2.

Crossrefs

Cf. A000040, A000290, A002471, A064283, A365289, A365291.

Sequence in context: A358867 A088747 A231574 * A007756 A374312 A000280

Adjacent sequences: A365285 A365286 A365287 * A365289 A365290 A365291

Keyword

nonn

Author

Ilya Gutkovskiy, Aug 31 2023

Status

approved