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A062559 A B2 sequence consisting of powers of primes but not primes: a(n) = least value from A025475 such that sequence increases and pairwise sums of distinct elements are all distinct. 0
4, 8, 9, 16, 25, 27, 49, 64, 121, 243, 256, 343, 512, 729, 961, 1024, 1331, 1369, 1849, 2048, 2187, 2197, 2401, 3125, 3481, 4096, 4913, 5329, 6561, 6859, 6889, 8192 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

32 is the first prime power > 1 not in this sequence.

LINKS

Table of n, a(n) for n=0..31.

CROSSREFS

Cf. A000961, A025475, A010672, A011185, A025582, A005282.

Sequence in context: A125643 A002760 A115651 * A010417 A155568 A067252

Adjacent sequences:  A062556 A062557 A062558 * A062560 A062561 A062562

KEYWORD

nonn

AUTHOR

Labos Elemer, Jul 03 2001

STATUS

approved

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Last modified November 20 13:19 EST 2019. Contains 329336 sequences. (Running on oeis4.)