A254405 a(n) = floor(b(n)), where b(n) = b(n-1)^(5/2), b(1) = 2.

2, 5, 76, 50535, 574095583180, 249724133031150566792019567784, 31163862905284344117664280692583318559734023853854503847082621442686494830

Offset

1,1

Links

Table of n, a(n) for n=1..7.

Formula

a(n) = floor(2^((5/2)^(n-1))).

Mathematica

Floor[RecurrenceTable[{a[1]==2, a[n]==a[n-1]^(5/2)}, a, {n, 1, 10}]]
Table[Floor[2^((5/2)^(n-1))], {n, 1, 10}]

Crossrefs

Cf. A254406.

Sequence in context: A301993 A128297 A183291 * A216847 A102983 A038583

Adjacent sequences: A254402 A254403 A254404 * A254406 A254407 A254408

Keyword

nonn,easy

Author

Vaclav Kotesovec, Jan 30 2015

Status

approved