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

1,1

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.

Links

Table of n, a(n) for n=1..99.

Crossrefs

Cf. A307129.

Sequence in context: A272949 A271998 A365965 * A379901 A228097 A075285

Adjacent sequences: A307127 A307128 A307129 * A307131 A307132 A307133

Keyword

base,nonn

Author

Eric Angelini and Lars Blomberg, Mar 26 2019

Status

approved