A273976 Primes of the form: Sum_{j=0..k} (k-j)^j.

2, 23, 733, 302155729822807067683647339069918655121463860225627810920499638685341

Offset

1,1

Links

Table of n, a(n) for n=1..4.

Example

a(1) = 2 = 2^0 + 1^1 + 0^2 (at k=2).
a(2) = 23 = 5^0 + 4^1 + 3^2 + 2^3 + 1^4 + 0^5 (at k=5).
a(3) = 733 = 8^0 + 7^1 + ... + 1^7 + 0^8 (at k=8).
a(4) = 3.021557...*10^68 = 72^0 + 71^1 + ... + 1^71 + 0^72 (at k=72).

Crossrefs

Primes in A026898.

Sequence in context: A269021 A136039 A237580 * A098633 A015211 A266992

Adjacent sequences: A273973 A273974 A273975 * A273977 A273978 A273979

Keyword

nonn

Author

Marc Morgenegg, Nov 10 2016

Status

approved