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A254403 a(n) = floor(b(n)), where b(n) = b(n-1)^(3/2), b(1) = 4. 2
4, 8, 22, 107, 1116, 37315, 7208411, 19353494040, 2692396855225368, 139703926313910081688758, 52217120356716278672533411477879775, 11932168478692303941858114447713697732545410824169841 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..12.

FORMULA

a(n) = floor(4^((3/2)^(n-1))).

MATHEMATICA

Floor[RecurrenceTable[{a[1]==4, a[n]==a[n-1]^(3/2)}, a, {n, 1, 15}]]

Table[Floor[4^((3/2)^(n-1))], {n, 1, 15}]

CROSSREFS

Cf. A254404.

Sequence in context: A170938 A003684 A254404 * A075688 A272563 A272152

Adjacent sequences:  A254400 A254401 A254402 * A254404 A254405 A254406

KEYWORD

nonn,easy

AUTHOR

Vaclav Kotesovec, Jan 30 2015

STATUS

approved

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Last modified February 28 11:08 EST 2020. Contains 332323 sequences. (Running on oeis4.)