A254400 a(n) = floor(b(n)), where b(n) = b(n-1)^(3/2), b(1) = 2.

2, 2, 4, 10, 33, 193, 2684, 139116, 51888311, 373769884171, 228510656987187971, 109234465617278065859643766, 1141667222716533804555279991265973169394, 38575298818045633410275497202805726438253675072452563405216

Offset

1,1

Links

Table of n, a(n) for n=1..14.

Formula

a(n) = floor(2^((3/2)^(n-1))).

Mathematica

Floor[RecurrenceTable[{a[1]==2, a[n]==a[n-1]^(3/2)}, a, {n, 1, 15}]]
Table[Floor[2^((3/2)^(n-1))], {n, 1, 15}]

Crossrefs

Cf. A254401, A254403, A254405.

Sequence in context: A002420 A284016 A112556 * A054100 A034165 A006181

Adjacent sequences: A254397 A254398 A254399 * A254401 A254402 A254403

Keyword

nonn,easy

Author

Vaclav Kotesovec, Jan 30 2015

Status

approved