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A037127 a(n) = nextprime(3^n) - 2^n. 0
1, 3, 7, 21, 67, 219, 669, 2075, 6307, 19175, 58027, 175119, 527361, 1586139, 4766587, 14316141, 42981211, 129009125, 387158355, 1161737235, 3485735833, 10458256107, 31376865309, 94134790251, 282412759267, 847255055025, 2541798719467, 7625463267275 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..27.

FORMULA

a(n) = A151800(A000244(n)) - A000079(n). - Alois P. Heinz, Dec 09 2020

CROSSREFS

Cf. A000079, A000244, A151800.

Sequence in context: A097147 A148677 A240506 * A105795 A322459 A244174

Adjacent sequences:  A037124 A037125 A037126 * A037128 A037129 A037130

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Dec 09 2020

STATUS

approved

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Last modified April 14 04:41 EDT 2021. Contains 342941 sequences. (Running on oeis4.)