A252583 - OEIS

A252583

a(n) = a(n-1)^3 + a(n-2)^6, a(0) = 0, a(1) = 1.

0, 1, 1, 2, 9, 793, 499208698, 124407462491481058208408441, 1925481259009966865844002992692350885969632796673886663638811207308483184039785

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OFFSET

0,4

LINKS

FORMULA

a(n) ~ c^(3^n), where c = 1.0278548747403916038597317519446646178420852580529382519451043895427806227... . - Vaclav Kotesovec, Dec 18 2014

MATHEMATICA

RecurrenceTable[{a[0]==0, a[1]==1, a[n] == a[n-1]^3 + a[n-2]^6}, a, {n, 0, 10}]

nxt[{a_, b_}]:={b, b^3+a^6}; NestList[nxt, {0, 1}, 10][[All, 1]] (* Harvey P. Dale, Jul 22 2022 *)

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved