A364680 Smallest initial number k of n consecutive numbers satisfying sigma(k) > sigma(k+1) > ... > sigma(k+n-1).

1, 4, 44, 44, 20021154, 20021154

Offset

1,2

Links

Table of n, a(n) for n=1..6.

Prog

(PARI) b(n) = my(k=n); while(sigma(k)>sigma(k+1), k++); k-n+1;
a(n) = my(k=1); while(b(k)<n, k++); k;

Crossrefs

Cf. A000203, A075029.

Cf. A050944, A050945, A053226, A364657.

Sequence in context: A284192 A278798 A102388 * A284065 A063837 A344871

Adjacent sequences: A364677 A364678 A364679 * A364681 A364682 A364683

Keyword

nonn,more

Author

Seiichi Manyama, Aug 02 2023

Status

approved