A303580 List of starts of nondecreasing runs of values of the Euler totient function phi(n) (A000010(n)).

1, 6, 8, 10, 12, 14, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154

Offset

1,2

Links

Seiichi Manyama, Table of n, a(n) for n = 1..10000

Prog

(AWK) # Assume that b.txt contains a b-file for A000005
awk ' BEGIN {i = 1; print i}
{if ($2 < i) print $1; i = $2} ' b.txt >out

Crossrefs

Cf. A000010.

A303579 gives the lengths of the successive runs.

Sequence in context: A356609 A026286 A187085 * A003663 A075396 A269135

Adjacent sequences: A303577 A303578 A303579 * A303581 A303582 A303583

Keyword

nonn

Author

N. J. A. Sloane, Apr 29 2018

Status

approved