A134276 Row sums of triangle A134275 (S2(5)').
1, 6, 51, 661, 10831, 224751, 5523051, 158795026, 5197210126, 191295597726, 7808335521876, 350242714836901, 17115798145640401, 905207663613680151, 51504322711247118276, 3137060525840824654651, 203646443505582301226401
Offset: 1