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A107621 Primes multiplied alternately by 2 and 3. 5
4, 9, 10, 21, 22, 39, 34, 57, 46, 87, 62, 111, 82, 129, 94, 159, 118, 183, 134, 213, 146, 237, 166, 267, 194, 303, 206, 321, 218, 339, 254, 393, 274, 417, 298, 453, 314, 489, 334, 519, 358, 543, 382, 579, 394, 597, 422, 669, 454, 687 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Cf. A107620 Primes multiplied alternately by 3 and 2.

LINKS

Table of n, a(n) for n=1..50.

FORMULA

A107621(n) = prime(n)*(3 - mod(n, 2)).

MATHEMATICA

A107621[n_]:= Prime[n] (3 - Mod[n, 2])

CROSSREFS

Cf. A107620.

Sequence in context: A131457 A072525 A338906 * A098144 A109412 A061766

Adjacent sequences:  A107618 A107619 A107620 * A107622 A107623 A107624

KEYWORD

easy,nonn

AUTHOR

Zak Seidov, May 18 2005

STATUS

approved

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Last modified May 25 05:58 EDT 2022. Contains 354048 sequences. (Running on oeis4.)