A387898 Numbers that can be written in exactly two different ways in the form described by A387302.

4684, 7865, 8538, 10953, 11986, 12449, 18638, 19893, 23506, 40765, 53318, 53444, 65379, 66681, 72292, 82741, 85485, 90135, 95290, 96981, 99913, 108197, 118261, 119482, 132867, 137529, 138026, 150598, 152499, 170702, 176034, 177348, 184673, 192993, 194285, 197885, 225138, 231278, 231775, 233467, 236380

Offset

1,1

Links

Table of n, a(n) for n=1..41.

Example

4684 = 2^7 + 3^4 + 4^6 + 6^2 + 7^3 = 2^8 + 3^5 + 4^3 + 5^2 + 8^4.
7865 = 2^12 + 3^6 + 4^2 + 6^4 + 12^3 = 2^6 + 5^2 + 6^5.
8538 = 2^3 + 3^6 + 5^2 + 6^5 = 2^6 + 3^2 + 4^3 + 5^4 + 6^5.
10953 = 2^4 + 3^8 + 4^6 + 6^3 + 8^2 = 2^6 + 3^8 + 4^2 + 6^3 + 8^4.

Crossrefs

Subsequence of A386966 and A387302.

Cf. A385969, A385232, A385233, A386966, A387100, A387899.

Sequence in context: A218096 A293583 A263066 * A380476 A252773 A204073

Adjacent sequences: A387895 A387896 A387897 * A387899 A387900 A387901

Keyword

nonn

Author

Alberto Zanoni, Sep 11 2025

Status

approved