A307130 Sequence associated to A307129. The terms of the sequence are the successive sums of the successive pairs of adjacent terms of A307129.

30, 50, 70, 72, 50, 52, 70, 92, 90, 301, 270, 30, 32, 30, 50, 70, 74, 70, 90, 181, 210, 301, 270, 181, 210, 301, 270, 181, 210, 301, 270, 181, 210, 3010, 3018, 301, 290, 1092, 1090, 1092, 1090, 1092, 1090, 1290, 3030, 3050, 3052, 3030, 3032, 3030, 3032, 3030, 3050, 3070, 3090, 3092, 3070, 3072, 3070, 3090, 5070, 5072, 3090, 3250, 3030, 3050, 3052, 3030, 3032, 3030, 3032, 3030, 3050, 3070, 3090, 3092, 3070, 3072, 3070, 3090, 5070, 5072, 3090, 5050, 5070, 5090, 5092, 5070, 5072, 5070, 5090, 5292, 5070, 5072, 5070, 5090, 5490, 5070, 5072

Offset: 1

Author

Eric Angelini and Lars Blomberg, Mar 26 2019

Keywords

• base
• nonn

Comments

The digits of this sequence follow the pattern odd/even/odd/even... as do the digits of the sequence A307129.

A307129 and this sequence need a lot of backtracking to be computed; this means that the last few terms of A307129 and of this sequence might evolve. However, the first 100 terms proposed here seem accurate.

Crossrefs

Cf. A307129.