A332864 Lexicographically earliest sequence of positive integers with the property that the distance between the first appearance of n and the first appearance of n+1 is a(n).

1, 2, 1, 3, 4, 1, 1, 5, 1, 1, 1, 6, 7, 8, 1, 1, 1, 1, 9, 10, 11, 12, 1, 1, 1, 1, 1, 13, 1, 1, 1, 1, 1, 1, 14, 1, 1, 1, 1, 1, 1, 1, 15, 16, 17, 18, 19, 1, 1, 1, 1, 1, 1, 1, 1, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 23, 24, 25, 26, 27, 28

Offset

1,2

Links

Samuel B. Reid, Table of n, a(n) for n = 1..10000

Samuel B. Reid, C program for A332864

Samuel B. Reid, Graph of 10000 terms

Prog

(C) See Links section.
(Python)
a = [1]
for n in range(1, 30):
    a += [1] * (a[n-1]-1)
    a.append(n+1)
print(a)
# Andrey Zabolotskiy, Feb 28 2020

Crossrefs

Cf. A309681, A331910.

Sequence in context: A181642 A011358 A160188 * A337569 A244891 A322081

Adjacent sequences: A332861 A332862 A332863 * A332865 A332866 A332867

Keyword

nonn

Author

Samuel B. Reid, Feb 27 2020

Status

approved