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

Author

Samuel B. Reid, Feb 27 2020

Keywords

• nonn

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

Crossrefs

Cf. A309681, A331910.

Programs

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