OFFSET
1,1
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
KEYWORD
nonn
AUTHOR
Marc Morgenegg, Nov 10 2016
STATUS
approved