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A053140 Odd primes that are not highly-imperfect numbers. 0
181, 241, 251, 257, 263, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The sequence of highly-imperfect numbers begins with 1 and the odd primes up to 113... then even numbers appear and some odd primes are left out.

LINKS

Table of n, a(n) for n=1..33.

CROSSREFS

Cf. A074918.

Sequence in context: A216309 A139648 A142519 * A330366 A107694 A142312

Adjacent sequences:  A053137 A053138 A053139 * A053141 A053142 A053143

KEYWORD

nonn

AUTHOR

Joseph L. Pe, Oct 03 2002

STATUS

approved

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Last modified September 23 22:32 EDT 2020. Contains 337315 sequences. (Running on oeis4.)